Forouzan, Behrouz A. <br/><br/>
Data communications and networking / 

 - 5th ed. 
 - Chennai :  McGraw Hill Education (India) Pvt. Ltd.,  c2017. 
 - xxxviii, 1226 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781259064753 
<br/><br/><label>LC Class. No.: </label>22385-22389 
<br/><br/><label>Dewey Class. No.: </label>004.6  / FOR